Little known fact... the female mantis frequently begins cannibalizing the male during coitus by biting his head off forcing the the male to ejaculate more quickly. After the fact, she finishes eating him...

This kind of brilliant blue is caused when ice is under such tremendous pressure that the air bubbles in it are literally compressed out and, since air-free ice absorbs every color in the spectrum except for blue, the blue is reflected back to our eyes.